CommonMap is an open source map project, forked from OpenStreetMap by a licence problem. CommonMap needs original softwares tuned for CommonMap. Most of software would be useful for any other open source map projects, too.

A collection of small utility programs to process geographic information and GPS data. Each program is written in Java and simple enough to be easy to understand. E.g. GTOPO30 to JPG, GLCC20 to JPG, GPX reader.